page_title: David Hartley (philosopher)
hierarchical_section_title: David Hartley (philosopher)
caption_attribution_description: Portrait of D. Hartley, 17thC Rare Books Keywords: David Hartley
context_page_description: David Hartley FRS was an English philosopher and founder of the Associationist school of psychology.
context_section_description: David Hartley FRS (/ˈhɑːrtli/; baptized 21 June 1705 Old Style; died 28 August 1757) was an English philosopher and founder of the Associationist school of psychology.
caption: Engraving by William Blake in the 1791 edition of Hartley's Observations on Man
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